You're in the "Rotating Room" -- where a step forward moves you backwards. It's a maddening puzzle. You're trying to cross to the opposite side of the room, where you see another door. There's a clue written on that door. You can't finish the Seals puzzle without getting to that door and reading the clue.

You may want to use a walkthrough to get past this puzzle; but if you're stubborn -- then keep moving in the opposite direction from where you really want to go... and you'll get there.